Weather Records on 18 August 1975

844 weather records were set or tied worldwide on 18 August 1975. Highest significance: Cle Elum, US.

Key Facts for 18 August 1975

On 18 August 1975, 844 weather records were set or tied at long-record stations worldwide.
86 were record highs and 299 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 56 monthly and 785 daily.
Cle Elum set a monthly record daily precipitation of 51.6 mm (2.0 in) on 18 August 1975.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 439 records.

Record Map

844 stations

844 station records on 18 August 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cle Elum	United States	Record daily precipitation	51.6 mm (2.0 in)	73 of 100 (Major)
Logan 1 WNW	United States	Record daily precipitation	88.9 mm (3.5 in)	68 of 100 (Major)
Seattle Urban Site	United States	Record daily precipitation	31.8 mm (1.3 in)	63 of 100 (Major)
Mud Mtn Dam	United States	Record daily precipitation	86.1 mm (3.4 in)	60 of 100 (Major)
Chimacum 4 S	United States	Record daily precipitation	49.5 mm (1.9 in)	59 of 100 (Notable)
Bremerton	United States	Record daily precipitation	25.9 mm (1.0 in)	58 of 100 (Notable)
Buckley 1 NE	United States	Record daily precipitation	63.0 mm (2.5 in)	58 of 100 (Notable)
Lake Cle Elum	United States	Record daily precipitation	34.8 mm (1.4 in)	58 of 100 (Notable)
Severo-Enisejsk	Russia	Record daily precipitation	56.8 mm (2.2 in)	57 of 100 (Notable)
Rimrock Tieton Dam	United States	Record daily precipitation	36.8 mm (1.4 in)	57 of 100 (Notable)
White Swan Rs	United States	Record daily precipitation	31.2 mm (1.2 in)	56 of 100 (Notable)
Wauna 3 W	United States	Record daily precipitation	34.5 mm (1.4 in)	54 of 100 (Notable)
Colfax	United States	Record daily precipitation	25.4 mm (1.0 in)	52 of 100 (Notable)
Tiger Creek Ph	United States	Record daily precipitation	25.4 mm (1.0 in)	52 of 100 (Notable)
Metolius 1 W	United States	Record daily precipitation	30.5 mm (1.2 in)	52 of 100 (Notable)
Wapato	United States	Record daily precipitation	30.5 mm (1.2 in)	51 of 100 (Notable)
Nashville	United States	Record daily precipitation	80.5 mm (3.2 in)	50 of 100 (Notable)
Packwood	United States	Record daily precipitation	36.8 mm (1.4 in)	50 of 100 (Notable)
Fraser Range	Australia	Record daily precipitation	32.0 mm (1.3 in)	49 of 100 (Notable)
Syuryun-Kyuyel	Russia	Record daily precipitation	39.6 mm (1.6 in)	48 of 100 (Notable)
Balladonia 2	Australia	Record daily precipitation	27.0 mm (1.1 in)	47 of 100 (Notable)
Adin Rs	United States	Record daily precipitation	26.9 mm (1.1 in)	47 of 100 (Notable)
McMillin Rsvr	United States	Record daily precipitation	38.6 mm (1.5 in)	46 of 100 (Notable)
Wenatchee	United States	Record daily precipitation	69.1 mm (2.7 in)	46 of 100 (Notable)
Grapeview 3 SW	United States	Record daily precipitation	34.3 mm (1.4 in)	45 of 100 (Notable)
Yellow Grass	Canada	Record daily precipitation	52.6 mm (2.1 in)	44 of 100 (Notable)
Landsburg	United States	Record daily precipitation	33.8 mm (1.3 in)	44 of 100 (Notable)
De Sabla	United States	Record daily precipitation	31.8 mm (1.3 in)	43 of 100 (Notable)
Lake Kachess	United States	Record daily precipitation	37.6 mm (1.5 in)	43 of 100 (Notable)
San Juan de Los Lagos	Mexico	Record daily precipitation	52.8 mm (2.1 in)	41 of 100 (Notable)
Nenastnaja	Russia	Record daily precipitation	40.6 mm (1.6 in)	41 of 100 (Notable)
Bowman Dam	United States	Record daily precipitation	29.5 mm (1.2 in)	41 of 100 (Notable)
Macon	United States	Record daily precipitation	71.4 mm (2.8 in)	41 of 100 (Notable)
Mineral	United States	Record daily precipitation	31.5 mm (1.2 in)	41 of 100 (Notable)
Elma	United States	Record daily precipitation	46.5 mm (1.8 in)	40 of 100 (Notable)
Stampede Pass	United States	Record daily precipitation	63.8 mm (2.5 in)	40 of 100 (Notable)
Tacoma City Hall	United States	Record daily precipitation	36.6 mm (1.4 in)	40 of 100 (Notable)
Ninette	Canada	Record daily precipitation	27.2 mm (1.1 in)	39 of 100 (Notable)
Greenwater	United States	Record daily precipitation	41.9 mm (1.6 in)	38 of 100 (Notable)
Park Rapids Muni AP	United States	Record low minimum temperature	1.7 C (35.1 F)	38 of 100 (Notable)
Kanye	Botswana	Record daily precipitation	27.0 mm (1.1 in)	36 of 100 (Notable)
Marre-Sale	Russia	Record low minimum temperature	-5.0 C (23.0 F)	36 of 100 (Notable)
Minden	United States	Record low maximum temperature	16.1 C (61.0 F)	36 of 100 (Notable)
Knoxville UNIV of Tenn	United States	Record daily precipitation	40.4 mm (1.6 in)	36 of 100 (Notable)
Electron Headworks	United States	Record daily precipitation	43.9 mm (1.7 in)	36 of 100 (Notable)
Williams	Australia	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Metten	Germany	Record daily precipitation	38.4 mm (1.5 in)	35 of 100 (Notable)
Jarcevo	Russia	Record daily precipitation	31.9 mm (1.3 in)	35 of 100 (Notable)
Babuskin	Russia	Record high maximum temperature	27.7 C (81.9 F)	35 of 100 (Notable)
Clarion	United States	Record daily precipitation	59.7 mm (2.4 in)	35 of 100 (Notable)
Palmer 3 ESE	United States	Record daily precipitation	42.7 mm (1.7 in)	35 of 100 (Notable)
Longmire Rainier Nps	United States	Record daily precipitation	52.3 mm (2.1 in)	35 of 100 (Notable)
Randle 1 E	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Eppingen	Germany	Record daily precipitation	31.6 mm (1.2 in)	34 of 100 (Routine)
Teziutlan	Mexico	Record low maximum temperature	11.7 C (53.1 F)	34 of 100 (Routine)
Curapca	Russia	Record daily precipitation	34.4 mm (1.4 in)	34 of 100 (Routine)
Avon Park 2 W	United States	Record low minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Brookings 2 NE	United States	Record low maximum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Plain	United States	Record daily precipitation	27.9 mm (1.1 in)	34 of 100 (Routine)
Quilcene 2 SW	United States	Record daily precipitation	45.7 mm (1.8 in)	34 of 100 (Routine)

Counts by Type and Timescale

844 records

Records set or tied on 18 August 1975 by type: Highest daily maximum 31, Lowest daily maximum 199, Highest daily minimum 55, Lowest daily minimum 100, Heaviest daily rainfall 459.

Records on 18 August 1975 by type
Record type	Records
Highest daily maximum	31
Lowest daily maximum	199
Highest daily minimum	55
Lowest daily minimum	100
Heaviest daily rainfall	459
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1975 by timescale: all-time 3, monthly 56, daily 785.

How Much Records Were Beaten By

720 broken records

Margins by which the 720 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 63.7. Ties are not counted.

Top 20 by Significance

18 August 1975

Top 20 records on 18 August 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1975	Cle Elum, US	monthly rain	51.6 mm (2.0 in)	31.8 mm (1.3 in)	54 years	73 of 100 (Major)
18 August 1975	Logan 1 WNW, US	daily rain	88.9 mm (3.5 in)	63.5 mm (2.5 in)	69 years	68 of 100 (Major)
18 August 1975	Seattle Urban Site, US	daily rain	31.8 mm (1.3 in)	21.6 mm (0.9 in)	50 years	63 of 100 (Major)
18 August 1975	Mud Mtn Dam, US	monthly rain	86.1 mm (3.4 in)	43.7 mm (1.7 in)	25 years	60 of 100 (Major)
18 August 1975	Chimacum 4 S, US	monthly rain	49.5 mm (1.9 in)	22.3 mm (0.9 in)	14 years	59 of 100 (Notable)
18 August 1975	Bremerton, US	daily rain	25.9 mm (1.0 in)	15.2 mm (0.6 in)	61 years	58 of 100 (Notable)
18 August 1975	Buckley 1 NE, US	monthly rain	63.0 mm (2.5 in)	22.9 mm (0.9 in)	25 years	58 of 100 (Notable)
18 August 1975	Lake Cle Elum, US	daily rain	34.8 mm (1.4 in)	23.9 mm (0.9 in)	40 years	58 of 100 (Notable)
18 August 1975	Severo-Enisejsk, RU	all-time rain	56.8 mm (2.2 in)	15.3 mm (0.6 in)	19 years	57 of 100 (Notable)
18 August 1975	Rimrock Tieton Dam, US	daily rain	36.8 mm (1.4 in)	33.8 mm (1.3 in)	40 years	57 of 100 (Notable)
18 August 1975	White Swan Rs, US	monthly rain	31.2 mm (1.2 in)	18.0 mm (0.7 in)	6 years	56 of 100 (Notable)
18 August 1975	Wauna 3 W, US	daily rain	34.5 mm (1.4 in)	28.9 mm (1.1 in)	36 years	54 of 100 (Notable)
18 August 1975	Colfax, US	daily rain	25.4 mm (1.0 in)	25.4 mm (1.0 in)	66 years	52 of 100 (Notable)
18 August 1975	Tiger Creek Ph, US	daily rain	25.4 mm (1.0 in)	25.4 mm (1.0 in)	68 years	52 of 100 (Notable)
18 August 1975	Metolius 1 W, US	monthly rain	30.5 mm (1.2 in)	12.7 mm (0.5 in)	7 years	52 of 100 (Notable)
18 August 1975	Wapato, US	monthly rain	30.5 mm (1.2 in)	10.7 mm (0.4 in)	28 years	51 of 100 (Notable)
18 August 1975	Nashville, US	daily rain	80.5 mm (3.2 in)	63.7 mm (2.5 in)	25 years	50 of 100 (Notable)
18 August 1975	Packwood, US	monthly rain	36.8 mm (1.4 in)	12.4 mm (0.5 in)	42 years	50 of 100 (Notable)
18 August 1975	Fraser Range, AU	daily rain	32.0 mm (1.3 in)	26.2 mm (1.0 in)	6 years	49 of 100 (Notable)
18 August 1975	Syuryun-Kyuyel, RU	daily rain	39.6 mm (1.6 in)	26.8 mm (1.1 in)	16 years	48 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1797 to 1975

Records set or tied on this calendar date in each year from 1797 to 1975. 1975 had 844 records.

Counts for years before the ledger starts come from the same station rules.

Records on 08-18 in each year
Year	Records
1797	2
1805	1
1816	1
1827	1
1829	1
1830	1
1833	1
1841	1
1844	1
1845	3
1846	1
1847	1
1849	1
1851	1
1852	1
1853	1
1854	2
1855	1
1856	1
1861	1
1864	2
1866	1
1868	2
1869	1
1870	2
1872	1
1873	1
1875	3
1876	1
1878	1
1879	2
1883	3
1885	3
1886	3
1887	3
1888	2
1889	1
1890	1
1891	2
1892	6
1893	4
1894	4
1895	1
1898	4
1899	6
1900	2
1901	10
1902	8
1903	6
1904	8
1905	10
1906	40
1907	7
1908	21
1909	24
1910	16
1911	11
1912	21
1913	43
1914	37
1915	60
1916	71
1917	70
1918	53
1919	34
1920	51
1921	39
1922	129
1923	90
1924	225
1925	300
1926	168
1927	269
1928	141
1929	181
1930	150
1931	241
1932	382
1933	431
1934	638
1935	424
1936	766
1937	308
1938	243
1939	381
1940	434
1941	467
1942	333
1943	738
1944	325
1945	400
1946	416
1947	958
1948	315
1949	393
1950	683
1951	355
1952	405
1953	323
1954	622
1955	795
1956	580
1957	380
1958	580
1959	537
1960	599
1961	415
1962	428
1963	760
1964	443
1965	525
1966	573
1967	623
1968	795
1969	530
1970	597
1971	381
1972	493
1973	734
1974	639
1975	844
1976	917
1977	1,112
1978	854
1979	1,309
1980	771
1981	1,386
1982	563
1983	1,420
1984	600
1985	765
1986	861
1987	1,609
1988	1,351
1989	952
1990	920
1991	533
1992	1,497
1993	706
1994	1,027
1995	1,882
1996	760
1997	1,191
1998	923
1999	888
2000	1,183
2001	1,036
2002	1,306
2003	860
2004	1,050
2005	865
2006	842
2007	1,116
2008	1,265
2009	839
2010	1,167
2011	1,239
2012	1,247
2013	752
2014	751
2015	880
2016	704
2017	565
2018	462
2019	615
2020	1,541
2021	1,118
2022	1,237
2023	1,094
2024	696
2025	455
2026	545

Download the Data

Data for records on 1975-08-18: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 10	603
10 to 20	83
20 to 30	21
30 to 40	10
40 to 50	1
50 to 60	0
60 to 70	2